Processes for the preparation of 4-hydroxy-2H-1-benzothiopyran-3

Details Processes for the preparation of 4-hydroxy-2H-1-benzothiopyran-3 Processes for the preparation of 4-hydroxy-2H-1-benzothiopyran-3

1976-10-18

1977-09-06

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

26029357, 260327B, 26032682, 424274, 544145, C07D40904

Patent

active

040467783

ABSTRACT:
Processes for the production of the compounds of the formula: ##STR1## are disclosed. In the above formula, R.sub.1 is aryl which may be substituted or unsubstituted; R.sub.2 is hydrogen, alkyl, aryl, aralkyl, alkoxy, halogen, cyano, nitro, trifluoromethyl and the like.
These compounds are prepared by the following reaction schemes: ##STR2## These compounds are useful as anti-inflammatory agents.

REFERENCES:
patent: 3828073 (1974-08-01), Zinnes et al.
patent: 4007203 (1977-02-01), Zinnes et al.

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